Well, as for move sets... some of them I probably won't know how to explain.
Jabs: I'd say just a single jab with a knife/sword. She starts out as a Freelancer, so normally those begin with daggers/swords. Probably a quick strike with the animation that she uses in BD. I'd say about 6-8 damage (reminiscent of Roy's jab).
Tilts: no clue. Maybe work in some Monk/Thief moves for these.
FSmash: Crescent Moon / Stomp / Double Damage / Amped Strike / Shippuujinrai... I could go on with this.
DSmash: I'd say Quaga. It's an earth based move, so charging it up would increase the range around her character and damage dealt.
USmash: Dark/Holy seems like it'd work. I think based on her sprite color, her move set could change (if she's wearing a lighter color, it'd be Holy. If it's a darker color, it'd be Dark). These moves, I suppose could work like Mewtwo's USmash and Palutena's USmash (for Dark and Holy respectively).
Neutral B: Maybe Dark Bane. It could shoot a beam that could possibly be charged.
Down B: Nothing Ventured. It would function as a normal counter move (I think it'd look something like Shulk's Vision move).
If we don't want a Counter move, how about Poison/Sleep? It'd be a small move (somewhat like Mewtwo's Disable, requiring people to be within range to take effect).
- Now that I look, Swordmaster already has an ability called Counter... So let's not do that. Too boring.
Side B: Blood Thirst (from Vampire). Idk, maybe drain something close to what Robin can do, but perhaps a little less (since it can be used more than Robin's Nosferatu can).
If not that, how about Twilight / Exterminate. It'd function with the Poison / Sleep special. Instead of Twilight actually killing someone, maybe just deal a large amount of damage like Exterminate. I suppose that combo could be set up something like Jigglypuff's Sing + Rest combo.
Up B: High Jump. It makes sense, since it kinda reminds me of King De De De and his move.
Final Smash: I have no idea. I'd assume perhaps it'd be something to do with the Brave / Default thing. Either that, or we could do a Summoner thing (maybe use one of the 5 Summons to deal damage to people caught within a small AoE). OR we could do a Summon Friend thing where it traps people in a small AoE then summons a random Job (with either Tiz, Ringabel, or Edea's sprite).
...Now that I've written all that down, dis bish has so many options for moves it's mind boggling. Some of these could actually make her custom moves as well, but that's a whole other story.